twinkle_notification.sh

#!/bin/bash

mute() {
  temp=$(mktemp)
  pacmd list-sink-inputs > $temp
  process_id=$(pidof "twinkle")

  while read line; do
    if [[ "${line:0:6}" == "index:" ]]; then
      index="${line:7}"
    elif [[ "${line:0:25}" == "application.process.id = " ]]; then
      if [[ "${line:25}" != "\"$process_id\"" ]]; then
        pacmd set-sink-input-mute $index $1 > /dev/null 2>&1
      fi
    fi
  done < $temp
}

if [[ "${SIP_CSEQ}" == "102 INVITE" ]]; then
  from=$(echo ${SIP_FROM}| cut -d ';' -f 1)
  if zenity --question --no-markup --text "CALL FROM: $from, answer?"; then
    mute 1
    echo "awful.tag.viewonly(tags[2][9])" | awesome-client #default startup tag for twinkle
    twinkle --cmd answer
  fi
else
  mute 0
fi